package com.xiaotu.security.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

/**
 * @author Mr.zhang
 * @create 2021-11-21 17:20
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private PasswordEncoder passwordEncoder;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        System.out.println("执行了loadUserByUsername方法");
        //1.查询数据库判断用户名是否存在，如果不存在抛出UsernameNotFoundException异常
        if (!"admin".equals(username))
            throw new UsernameNotFoundException("用户名不存在！");
        //2.把查询出来的密码（注册时已经加密过）进行解析，或者把密码直接放入构造方法
        String password = passwordEncoder.encode("123");
        return new User(username,password,
                AuthorityUtils.commaSeparatedStringToAuthorityList("admin,normal,ROLE_abc,/main.html"));
    }

}
